Home / 10,721.67-16,054.55-8,630.25

Finding the Fourth Proportional to 10,721.67, 16,054.55 and 8,630.25

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Solution

The fourth proportional to 10,721.67, 16,054.55 and 8,630.25 is: 12,922.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,721.67 : 16,054.55 = 8,630.25 : x
  2. Step 2: Convert to fraction form
    10,721.67/16,054.55 = 8,630.25/x
  3. Step 3: Cross multiply
    10,721.67x = 16,054.55 × 8,630.25
  4. Step 4: Simplify right side
    10,721.67x = 138,554,780.14
  5. Step 5: Solve for x
    x = 138,554,780.14/10,721.67
  6. Step 6: Final answer
    x = 12,922.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.